Chemistry Midterm Day 1

Name as seen in genesis

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Class Period

• 1

• 2

• 4

• 7

The physical change in melting an ice is reversible.

• a. TRUE
• b. FALSE

A change that produces matter with a different composition is a ____________________ change.

• Chemical
• Physical
• Biological

Butter is a mixture of proteins and fats that does not separate out when left alone. What type of mixture is butter?

• a. solution
• b. colloid
• c. compound
• d. suspension

What kind of questions CANNOT be answered by chemistry?

• a. how to produce materials more quickly and cheaply
• b. what a certain substance is made of
• c. why matter exists
• d. whether a certain substance will be harmful or helpful to humans

If two poisonous compounds are chemically combined, the resulting compound will definitely be harmful.

• a. TRUE
• b. FALSE

Stephen accidentally breaks a window while tossing a baseball. The window shatters into what seems like a million pieces. What happens to the matter in the glass?

• a. The matter looks different, but the amount stays the same.
• b. The amount of matter in the glass is reduced.

When nails, screws, and bolts are prepared from a piece of iron, the composition of iron will change

• a. TRUE
• b. FALSE

Which branch of chemistry specifically deals with quantitative analysis?

• a. Analytical Chemistry
• b. Medicinal Chemistry